<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
        <style type="text/css">
            body, html{width: 100%;height: 100%;margin:0;font-family:"微软雅黑";}
            #allmap {width: 100%; height:500px; overflow: hidden;}
            #result {width:100%;font-size:12px;}
            dl,dt,dd,ul,li{
                margin:0;
                padding:0;
                list-style:none;
            }
        p{font-size:12px;}
        dt{
            font-size:14px;
            font-family:"微软雅黑";
            font-weight:bold;
            border-bottom:1px dotted #000;
            padding:5px 0 5px 5px;
            margin:5px 0;
        }
        dd{
            padding:5px 0 0 5px;
        }
        li{
            line-height:28px;
        }
        </style>
        <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=您的密钥"></script>
        <!--加载鼠标绘制工具-->
        <script type="text/javascript" src="http://api.map.baidu.com/library/DrawingManager/1.4/src/DrawingManager_min.js"></script>
        <link rel="stylesheet" href="http://api.map.baidu.com/library/DrawingManager/1.4/src/DrawingManager_min.css" />
        <!--加载检索信息窗口-->
        <script type="text/javascript" src="http://api.map.baidu.com/library/SearchInfoWindow/1.4/src/SearchInfoWindow_min.js"></script>
        <link rel="stylesheet" href="http://api.map.baidu.com/library/SearchInfoWindow/1.4/src/SearchInfoWindow_min.css" />
        <title>鼠标绘制工具</title>
    </head>
    <body>
        <div id="allmap" style="overflow:hidden;zoom:1;position:relative;">
            <div id="map" style="height:100%;-webkit-transition: all 0.5s ease-in-out;transition: all 0.5s ease-in-out;"></div>
        </div>
        <div id="result">
            <input type="button" value="获取绘制的覆盖物个数" onclick="alert(overlays.length)"/>
            <input type="button" value="清除所有覆盖物" onclick="clearAll()"/>
        </div>
        <script type="text/javascript">
            // 百度地图API功能
            var map = new BMap.Map('map');
            var poi = new BMap.Point(116.307852,40.057031);
            map.centerAndZoom(poi, 16);
            map.enableScrollWheelZoom();
            var overlays = [];
            var overlaycomplete = function(e){
                overlays.push(e.overlay);
            };
        var styleOptions = {
            strokeColor:"red",    //边线颜色。
            fillColor:"red",      //填充颜色。当参数为空时，圆形将没有填充效果。
            strokeWeight: 3,       //边线的宽度，以像素为单位。
            strokeOpacity: 0.8,	   //边线透明度，取值范围0 - 1。
            fillOpacity: 0.6,      //填充的透明度，取值范围0 - 1。
            strokeStyle: 'solid' //边线的样式，solid或dashed。
        }
        //实例化鼠标绘制工具
        var drawingManager = new BMapLib.DrawingManager(map, {
                                                        isOpen: false, //是否开启绘制模式
                                                        enableDrawingTool: true, //是否显示工具栏
                                                        drawingToolOptions: {
                                                        anchor: BMAP_ANCHOR_TOP_RIGHT, //位置
                                                        offset: new BMap.Size(5, 5), //偏离值
                                                        },
                                                        circleOptions: styleOptions, //圆的样式
                                                        polylineOptions: styleOptions, //线的样式
                                                        polygonOptions: styleOptions, //多边形的样式
                                                        rectangleOptions: styleOptions //矩形的样式
                                                        });  
                                                        //添加鼠标绘制工具监听事件，用于获取绘制结果
                                                        drawingManager.addEventListener('overlaycomplete', overlaycomplete);
                                                        function clearAll() {
                                                            for(var i = 0; i < overlays.length; i++){
                                                                map.removeOverlay(overlays[i]);
                                                            }
                                                            overlays.length = 0   
                                                        }
        </script>
    </body>
</html>

